You will start on the path just above the town, run up the hill just a bit or the Banished Dream Riders will patrol into you. Keep your healer behind the rest of the party out of range of the Dream Riders and Wrathful Storms. The healer should always try to be behind a wall or some other obstruction. The groups outside of the gate are easily pulled to your team. There are two Torment Claws at the gate, kill them from a range to not aggro the mobs inside. Once they are dead pull the mobs just inside out. Pull the mobs where Masaharu (the skill trainer) usually stands to your team who should stand just inside the gate. On the far side of that platform a Chaos Wurm will popup. Kill him, and then pull the mobs at the far gate to where he popped up.

There is a patrol along the lower terrace with the docks, kill them from the hill above near where Mei Ling stands in the outpost. Run down the dock and kill the Torment Claw and Chaos Wurm. The last group patrols around the smoking gold pot shrine at the end of that pier, they can be charged.

Be careful of the Wrathful Storm's Meteor Shower, this can wipe out spirits, minions, and players that don't move out of them fast enough. A mesmer or ranger interrupter is sufficient to shut them down. A spirit spammer is recommended to body block mobs in strategic narrow places, such as at the gate and on the bridge. Be sure to bring Summon Spirits to move them in case they are caught in a Meteor Shower.

"I'm afraid I have bad news, [Character Name]. Seitung Harbor has fallen and our forces were pushed back to the monastery. We need every last body to launch a retaliatory strike. Will you join us in our efforts to take back Seitung Harbor?"